When you first open a page from the results, you will see the full page of the newspaper with a red stick pin. The red stick pin tells you where your article is. Ue the magnifying glass with the plus on it to increase the size of the image until it is at a comfortable reading size for you.
Now that you have it at a size you can read, you can mark the section that you want to save by clicking on the third button from the left - the one that has a printer and a green box.
This sets the print range. Next you can click on the 2nd button from the left, and that will show you what you have selected so you will know what it will look like.
And if that works for you, press OK. Remember A4 is only slightly different than letter size. A3 is much much larger.
Printing the results page:
You may want to print the results page - either as a pdf or on paper - and share it with your professor to help you select which of the articles you want to read.
On the results page is a button that says print-friendly view in English. In Japanese it looks like this:
It is a toggle switch, so click on it before you hit print. And then click it again to return to the normal view.
Printing articles from Heisei/Reiwa section:
You will also see the print-friendly button. If you click on the button, you will get a good page to print out. Remember to toggle back to normal mode to continue.